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3 years ago

Find a polynomial with a degree of 3, and the zeros 1,7, & -4 with no other zeros.

1 answer:

5 0

$The\ zeros:\\\\x=1,\ x=7,\ x=-4\\\downarrow\\x-1=0,\ x-7=0,\ x+4=0\\\downarrow\\w(x)=(x-1)(x-7)(x+4)=(x^2-7x-1x+7)(x+4)\\\\=(x^2-8x+7)(x+4)=x^3+4x^2-8x^2-32x+7x+28\\\\Answer:\ w(x)=x^3-4x^2-25x+28$

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Anson estimated he would need 17 hours to complete his science project. He actually needed 19 1 2 19 1 2 hours. What was his per

satela [25.4K]

Answer:

The answer is B. 14.7%.

Step-by-step explanation:

Given:

Estimated time need to complete project $17h$ .

Actually time needed $19\frac{1}{2}h$ = $\frac{39}{2}$ h.

Difference between the time $ET-AT$ = $\frac{39}{2}- 17\\=\frac{39}{2} -\frac{34}{2}\\ =\frac{5}{2}$ $=2.5h$ .

So, the percentage error is $\frac{2.5}{17}\times100\\ =\frac{250}{17} \\=14.70%$ .

Therefore, the answer is B. 14.7%.

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3 years ago

Read 2 more answers

Write 149,597,870,700 in scientific notation with 3 significant figures

Lynna [10]

Answer:

1.50 x 10^11.

Step-by-step explanation:

There 11 digits after the 1 so it is:

1.50 x 10^11.

(1495 to 3 s. f. is 150)

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2 years ago

HELP ASAP-The girls’ soccer team won 80% of its games this season. They won 12 games. -The boys’ soccer team won 70% of its game

tia_tia [17]

Answer:

12 and 14

Step-by-step explanation:

15 - 20% = 12

20 - 30% = 14

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3 years ago

How much gas will John have in the tank when he arrives in Fresno

olya-2409 [2.1K]

Can you please insert a diagram next time or a picture since We don't know any other information. It's completely impossible to answer this without more information.

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3 years ago

In a square, the sum of the lengths of three sides is 45 and in a rectangle the difference between a length and a width is 5 in.

stira [4]

Square:
We know all sides of a squares are equal in length.
s= the length of one side of the square.
45= s+s+s
45= 3s
s=15 inches
Each side of the square is 15 inches.

Rectangle:
length(l)= ????
Width(w)= s = 15 inches

l -w= 5inches
l- (15 inches)= 5 inches
l = 20 inches

Answer:
A length of the rectangle is 20 inches long.

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3 years ago